长链非编码RNA及其与肿瘤相关研究进展

哺乳动物基因组中存在着大量非编码RNA是现代生物学研究的重大发现之一[1].应用基因芯片及全基因组和转录组测序技术研究证实编码蛋白质的RNA只占全部基因转录本的2％,剩余98％为非编码RNA[2]. 非编码RNA是指不编码蛋白质但在生物体生命活动中具有功能的RNA分子,按长度可将其分为短链非编码RNA和长链非编码RNA( long non-coding RNA,lncRNA)两大类.许多短链非编码RNA已被证实在肿瘤形成过程中发挥着重要作用[3],包括已被广泛研究并引起重视的microRNA和siRNA等.而后者指长度大于200个核苷酸的RNA,不参与或很少参与蛋白编码.目前研究已发现数十种lncRNA具有基因印记、计量补偿效应、RNA剪切等分子生物学作用,与肿瘤在内的多种疾病密切相关.本文将就lncRNA在肿瘤发生、发展中的作用做一综述.     

CO2气腹环境对胃癌细胞黏附与侵袭转移的影响

Objective To investigate the influence of CO2 pneumoperitoneum on the adhesive and invasive ability of gastric cancer cells based on the expression of adhesive and invasive molecules. Methods With an artificial CO2 pneumoperitoneum model in vitro, human gastric cancer cells MKN-45, SGC-7901 and MKN-28 were exposed to 3 different CO2 gradients: 9 mm Hg, 15 mm Hg and control group (0 mm Hg). The expression of E-cadherin, ICAM-1, MMP-2 and VEGF-A were measured at 2 and 4 hours exposure by using RT-PCR, CytoMatrixTM kit and ECMatrixTM kit. The pretreated gastric cancer cells were injected into abdominal cavity of nude mice(2×106 cells per mouse). Five mice in each group were sacrificed 4 weeks later to record the number of tumor nodules in abdominal cavity. The remaining mice were kept for observation of survival time. Results The expression of E-cadherin (MKN-45: from 2.26 to 2.19, SGC-7901 :from 2.16 to 2.09、MKN-28 :from 2.06 to 1.99), ICAM-1 (MKN-45 : from 2.20 to 2.28、SGC-7901: from 2.10 to 2.18、MKN-28: from 2.00 to 2.08), MMP-2 (MKN-45:from 2.05 to 2.13、SGC-7901: from 1.95 to 2.03、MKN-28: from 1.85 to 1.93) and VEGF-A(MKN-45 : from 2.10 to 2.16、SGC-7901 :from 2.00 to 2.06、MKN-28: from 1.90 to 1.96) didn't change significantly with increasing pressure and time (P>0.05). The expression of adhesive and invasive molecules didn't change significantly between the experimental groups and the control group. There was no statistical significance of tumor metastasis in abdominal cavity of nude mice(MKN-45:from 22 to 23、SGC-7901 :from 20 to 22、MKN-28:from 21 to 22) and survival time(MKN-45 :from 23 to 21、SGC-7901 :from 22 to 21、MKN-28 :from 22 to 21) among all the groups. Conclusion Under low pressure and short time of CO2 exposure, the adhesive and invasive capacity of gastric cancer cells did not change significantly hence did not increase the possibility of neoplasm metastasis.     

肝切除术前门静脉栓塞疗效的荟萃分析

目的 探讨肝切除术(右半肝、扩大半肝切除术)前应用门静脉栓塞(portal veinembolization,PVE)的临床价值.方法 通过电子检索Pubmed、Medline、Ovid数据库,对1986至2008年有关右半肝或扩大半肝切除术前行PVE的病例对照研究资料进行meta分析.结果 共纳入文献9篇,494例患者.荟萃分析结果 显示,PVE手术组较单纯手术组术后肝功能衰竭的发生率降低(P=0.02),但两者术后手术死亡的差异无统计学意义(P>0.05);亚组分析肝细胞癌和结直肠癌肝转移PVE手术组较单纯手术组1、3、5年生存率差异无统计学意义(P>0.05);1篇文献报道结肠癌肝转移发生率PVE手术组术后肝内复发转移发生较单纯手术组降低(P=0.001),而其他远处转移发生率相对增高(P=0.004).结论 术前行PVE能够有效降低术后肝功能衰竭的发生,但临床医师应当谨慎把握行术前PVE的指征.     

半夏治疗失眠症的疗效观察

<正>在我国,成人中符合失眠症诊断标准者约10%～15%,且呈慢性化病程^[1]。认知行为治疗(CBT-I)是临床成人慢性失眠的一线和初始治疗方法^[2],可产生持久的疗效并减少镇静助眠药的摄入,但对部分患者疗效不佳。中医称失眠为“不寐”,认为其多由情志过极、饮食不节、劳逸失调、久病体虚等导致脏腑机能紊乱、气血失和、阴阳失调而致,治则以经方治疗及针灸等为主。有研究显示,半夏秫米汤用于湿痰内盛、胃不和则卧不安之失眠症有非常好的疗效^[3]。     

凝血酶敏感蛋白2在肿瘤中的研究进展

凝血酶敏感蛋白2(TSP-2)是凝血酶敏感蛋白家族中的一员,是有效的内源性肿瘤微血管生成抑制剂.在体外试验、动物实验及临床肿瘤的研究中,发现TSP-2的表达与肿瘤微血管生成、肿瘤细胞的黏附和侵袭都有密切的关系.现综述TSP-2在肿瘤研究和治疗中的新进展.     

CO2气腹环境对胃癌细胞黏附与侵袭转移的影响

Objective To investigate the influence of CO2 pneumoperitoneum on the adhesive and invasive ability of gastric cancer cells based on the expression of adhesive and invasive molecules. Methods With an artificial CO2 pneumoperitoneum model in vitro, human gastric cancer cells MKN-45, SGC-7901 and MKN-28 were exposed to 3 different CO2 gradients: 9 mm Hg, 15 mm Hg and control group (0 mm Hg). The expression of E-cadherin, ICAM-1, MMP-2 and VEGF-A were measured at 2 and 4 hours exposure by using RT-PCR, CytoMatrixTM kit and ECMatrixTM kit. The pretreated gastric cancer cells were injected into abdominal cavity of nude mice(2×106 cells per mouse). Five mice in each group were sacrificed 4 weeks later to record the number of tumor nodules in abdominal cavity. The remaining mice were kept for observation of survival time. Results The expression of E-cadherin (MKN-45: from 2.26 to 2.19, SGC-7901 :from 2.16 to 2.09、MKN-28 :from 2.06 to 1.99), ICAM-1 (MKN-45 : from 2.20 to 2.28、SGC-7901: from 2.10 to 2.18、MKN-28: from 2.00 to 2.08), MMP-2 (MKN-45:from 2.05 to 2.13、SGC-7901: from 1.95 to 2.03、MKN-28: from 1.85 to 1.93) and VEGF-A(MKN-45 : from 2.10 to 2.16、SGC-7901 :from 2.00 to 2.06、MKN-28: from 1.90 to 1.96) didn't change significantly with increasing pressure and time (P>0.05). The expression of adhesive and invasive molecules didn't change significantly between the experimental groups and the control group. There was no statistical significance of tumor metastasis in abdominal cavity of nude mice(MKN-45:from 22 to 23、SGC-7901 :from 20 to 22、MKN-28:from 21 to 22) and survival time(MKN-45 :from 23 to 21、SGC-7901 :from 22 to 21、MKN-28 :from 22 to 21) among all the groups. Conclusion Under low pressure and short time of CO2 exposure, the adhesive and invasive capacity of gastric cancer cells did not change significantly hence did not increase the possibility of neoplasm metastasis.     

类风湿关节炎与下丘脑-垂体-肾上腺轴关系的研究概况

下丘脑-垂体-肾上腺轴(HPAA)系统在类风湿关节炎(RA)发病及其治疗过程中的作用逐渐受到风湿病学者的重视,本文就RA与糖皮质激素(GC)、促肾上腺皮质激素(ACTH)、促肾上腺皮质激素释放激素(CRH)的关系进行综述,可资临床借鉴。     

CO2气腹环境对胃癌细胞黏附与侵袭转移的影响

Objective To investigate the influence of CO2 pneumoperitoneum on the adhesive and invasive ability of gastric cancer cells based on the expression of adhesive and invasive molecules. Methods With an artificial CO2 pneumoperitoneum model in vitro, human gastric cancer cells MKN-45, SGC-7901 and MKN-28 were exposed to 3 different CO2 gradients: 9 mm Hg, 15 mm Hg and control group (0 mm Hg). The expression of E-cadherin, ICAM-1, MMP-2 and VEGF-A were measured at 2 and 4 hours exposure by using RT-PCR, CytoMatrixTM kit and ECMatrixTM kit. The pretreated gastric cancer cells were injected into abdominal cavity of nude mice(2×106 cells per mouse). Five mice in each group were sacrificed 4 weeks later to record the number of tumor nodules in abdominal cavity. The remaining mice were kept for observation of survival time. Results The expression of E-cadherin (MKN-45: from 2.26 to 2.19, SGC-7901 :from 2.16 to 2.09、MKN-28 :from 2.06 to 1.99), ICAM-1 (MKN-45 : from 2.20 to 2.28、SGC-7901: from 2.10 to 2.18、MKN-28: from 2.00 to 2.08), MMP-2 (MKN-45:from 2.05 to 2.13、SGC-7901: from 1.95 to 2.03、MKN-28: from 1.85 to 1.93) and VEGF-A(MKN-45 : from 2.10 to 2.16、SGC-7901 :from 2.00 to 2.06、MKN-28: from 1.90 to 1.96) didn't change significantly with increasing pressure and time (P>0.05). The expression of adhesive and invasive molecules didn't change significantly between the experimental groups and the control group. There was no statistical significance of tumor metastasis in abdominal cavity of nude mice(MKN-45:from 22 to 23、SGC-7901 :from 20 to 22、MKN-28:from 21 to 22) and survival time(MKN-45 :from 23 to 21、SGC-7901 :from 22 to 21、MKN-28 :from 22 to 21) among all the groups. Conclusion Under low pressure and short time of CO2 exposure, the adhesive and invasive capacity of gastric cancer cells did not change significantly hence did not increase the possibility of neoplasm metastasis.     

性激素对类风湿关节炎的影响

人们发现性激素可对免疫应答的多个水平产生影响,性激素水平及其代谢产物的异常所造成的内环境失调是自身免疫反应紊乱的重要因素之一。已知类风湿关节炎(rheumatoid arthritis,RA)是一种以慢性多关节炎症为主要临床表现的全身性自身免疫疾病。本文对近十年来有关性激素影响RA发生、发展及其免疫机制的研究进行综述,并对其用于RA治疗提出展望。     

三联疗法治疗急性腰扭伤62例疗效观察

目的:观察刺血拔罐、针刺、中药三联疗法治疗急性腰扭伤的疗效。方法:1)刺血拔罐,用三棱针点刺腰部阿是穴、委中穴出血后在出血处拔罐;2)针刺腰痛穴,行提插捻转手法强刺激,留针30min并同时嘱患者活动腰部;3)内服中华跌打丸。结果:治愈51例,有效7例,无效4例,总有效率93.5%(95%CI=84.15%～98.22%)。结论:刺血拔罐、针刺、中药三联疗法治疗急性腰扭伤简单实用,疗效满意。